An exercise class costs $9 per class. Seven students are planning to take 12 classes. How much will the students pay in all.

Let's assume

Ms. Meyer used to bring x students for the cost $9 per student

so, total cost = 9x

now, we are given

For ticket cost $6, she can brings 47 more students

so, total students = x+47

total cost = 6 * (x+47)

now, we are given total costs are same for both

we get

we can solve for x

Subtract both sides by 6x

Divide both sides by 3

so, Ms. Meyer brings 94 students to theater ... Answer